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West Virginia's tricky primary rules could cost Donald Trump four delegates. It won't matter — Trump has 92 percent of the delegates needed to win the nomination. Trump easily won the West Virginia primary. However, most of the state's delegates are elected directly by voters.

Twenty-two delegates were elected based on the statewide vote, and the top 22 vote getters were all Trump delegates. However, no more than two can be from the same county. Bernie Sanders is trailing Hillary Clinton by 283 delegates on the democratic side.

Both candidates who were expected to win in West Virginia Tuesday did -- Donald Trump and Bernie Sanders took the state.

With no one left to run against, Trump won the Republican primary in the state by a large margin. A small crowd gathered at Embassy Suites in Charleston to celebrate the victory. Robert Jones, of Charleston, was at the party and said Trump is the candidate the state needs.

Democratic presidential hopeful Bernie Sanders made a surprise visit to The Late Show with Stephen Colbert Monday night. The late-night show also featured clips and a sketch on Donald Trump's visit to Charleston last week.

Appearing the night before the West Virginia primary, Sanders teaches Colbert a lesson in not giving up as the comedian is distraught after not being able to get a 100 Grand candy bar from a vending machine.